Tire-inflating apparatus



Nov. 19, 1929. Y E. M. MORLEY 1,736,274

' TIRE INFLATING APPARATUS Filed April 25, 1927 2 Sheets-Sheet l ff 2 f/f7 I mf lli/mm1 zio 53E 4,0 Slo s fa il; f4 77 i /as fi /fff l r Y A l Io Y l ,Z5 if? if ff 8 i y 35 a7 27 if f/ 5./ Jg l" l 9oV j V 5A i3 0*yj/ XZ 77 Z f 77 n. @NTU Sz $50 57 4 95 f5 j l wf Z6 I 0.7.996l 87 j 736/ oc @g2- ff -EMSA Nov. 19, '1929. E. M. MORLEY 1,736,274

TIRE INFLATING APPARATUS Filed April 25, 1927 2 lSheets-Sheet 2 Ww" WPatented Nov. '19,- 1929 EAnnM. moRLEY, or DELTA, omo, .eissizouaoit ToTHE Ara-SCALE LEDo, omo, A ooRronArIoN oF onro TIRE-INFLATINGArrARA'rUs:

Application mea April l21s, 1927. seriai 1ro. 186,271.

This invention relates to automatically controlled adjustable deliveryvalves.

This invention has utility for deliveringI 10 2 is a fragmentary'view,partially in vertlcal section, of the control and regulator.J

Valve as shown in Fig. 1;`

Fig.. 2a is a fragmentary detail view of the alarm;

Fig. 3 is a sectionon the line IIIe-III, Fig. 1, looking in thedirection of the arrow; Fig. 4 is a section on the line IV-IV, Fig. 1,looking in the direction of the arrow; and Fig. 5 is a section on theline V-V, Fig.

20 3, looking in the direction of the arrow.

Service station 1 is shown as having high pressure air supply tank2 sayfor pressure running 150 to 200 pounds, which may be maintained bycompressor or other eqipment. From this tank 2 as source of pressureair, flow is controlled by valve 3 to'line 4 extending past watertrap 5,filter 6, into standard 7 terminating in pressure air supply fitting 8as entering housing. section 9 provided with pressure'air supply port 10which may be normally closed by plunger valve 11- laterally of which isoutlet port I12 with which coacts delivery lline fitting 13 for pipe 14extending to enter supplemental standard 15 having counter weighted arm17 :from which extends exible duct 18 having check valve terminus 19 tobe unseated by lovided with counter weight 53 having a (1 eating againsttire check valve 20 of pneumatic tire 21 o n motor vehicle 22.

This valve 11 is in chamber 23 as a primary valve chamber for this'primary valve 11. vFrom chamber 23, besides the intake port 10 and thedelivery port 12, there is an auxil iary duct 24 having restrictedopening 25 and thence extending into secondary housing section 26 tosecondary valve chamber 27. Secondary valve 28 in chamber 27 may seat toclose port 29 thus to shut off communication through duct 30, restrictedopening 31, and

chamber'- 32 of the pressure control device. Chamber 321sl concentricwith an enlarged portion of chamber 23 and spaced therefrom bylintermediate iexible chamber' vwall de` vice comprising major Jdiaphragm33 at the chamber 32 and parallel `minor diaphragm COMPANY, or 'ro-- 34at thec-hamber 23. These diaphragme l are mounted between the housingprimary section 9 and the housing secondary section 26, with a'spacingfitting 35 sealed therebetween. Loose ring 36 is between the diaphragmson washer 37 in intermediate. chamv yber 38 from which there is ventopening 39 to permitv equalization of pressure due to at# mosphericconditions, between these-differ# phragms, may, in movement toward theport I 10,. act upon the primaryvalve 11 to shift -entialdiaphragms 33,34, conccntrically ansuch valve inthe chamber 23 to "close the port 10against Athe air y'pressure in the supply line thereto. As 'suchpressure in the supply'line exceeds the holding action of the diaphragmsfrom'the pressure in the chamber l32, the diferential diaphragme 33, 34,may be reverse- 1y flexed to enlarge the chamber 23 and retends d-uct43, 44, to chamber 45 havlng out-v duce the capacity of the chamber 32.From f let port 46 normally yclosed by checkvalve 47.

The secondary valve. 28 is connected to exible diaphragm -48 having,oppositely extending' from' the valve 28, stem 49 providing knife edgebearing coaction 50v with lever 51 engaged by knife edge bearingdownwardly directed fulcrum 52. This lever 51 is projustable anchor setscrew 54 (Fig. 5) and equipped with retarding spring 55 mounted by setscrew 56 (Fig. 2) in the housing Section 26 tending to hold the lever 51against i freely rocking.

The .lever 51 is provided with indication scale 57 which may begraduated sayin pounds avoirdupois for indicating the pressure persquare inch it 'is desired to use in',

Indif l charging a pneumatic tire ^with air.

cator weight 59, as shiftable alon `this'lever 1 51 in the range ofindications 5 may depin 76 precludes termine the adjustment for thiscontrol through the action of this lever on the stem 49.

' Thishousing section 26 is mounted by bolts on bosses lxed with frontwall 62 of head 63 for the standard 7. This head 63 is shown as havingopening 64 with transparencyv 65 therein as a window for convenientobservance therethroughof the indicating portion 57 of this lever 51.

Protrudin 'from this'head 63 lis stem 66 having han lwheel 67 (Figsl,v5). This stem 66, as upwardly extending intothe head 63, carries pulley68 about which extends cable 69 carrying Hight 70 This cable 69 extendsabout additional pulley 71 mounted by bracket 72 with the housingsection 26 back of the lever 51 as to the window 65. This cable 69hasits termini connected by eXtensible means or helical spring 74 as aslack take up thereby maintaining the cable taut.. This light coactswith slotted wing 75 as downwardly open and carried'by indicator 59.Accordingly the hand wheel 67, as exterior of the head 63, serves as' aready means for adjusting the indicator weight 59 to desired locationseither way along the lever 51. Stop shifting .the weight 59 clear of thelever 51. Stop' pins 77 78, limit the range of oscillation of .the lever51 as to the housing.

Switch 79 inthe service station 1 has line connection 8() to'electricbulb 81 in the head 63 as an illumination means for checking'thelocation of the weight 59 even at night time,

port 46 closed.

if the delivery device be used at such'periods.

4This head 63 is shownas having removable backplate 82 mounted with thehead 63 by bolt 84. This plate is shown as carrying the electric bulb81. Removal of the plate 82 permits access to the head interior forconvenience in assembly, replacement of the bulb and yin the event ofupkeep requirements. However in the design hereunder, such upkeepproblems are reduced to a minimum.

The lever 51 .is shown as having projecting stem 85 which, in theswinging of the lever 51 away from stop 78 toward the-stop 77 thrustscheck valve plunger 47 against the resistance of spring 86 to unseatsuchplungerwhich thereby opens the outlet port 46.

v However, as the pressure in the chamber 27 is suicient as actingthrough the stem 49 to rock the lever 51 clear of the stop 77, thespring 86 holds the check valve plunger 47 seated for maintaining thisbleed or leakage The operation hereofis one simply performed by even thecasual user of service station e uipmentl and the run of station custom-Y ll that it is necessary for the one desiring tire inflation t0 do isto remove the cap from the tire valve 30,' and then operatethe handwheel 67 at the head 63 to locate the iners.

" dicator 59 at the desired pressure, say 57 pounds. By pressing thevalve stem fitting other two.

19 over the valve terminus .20 of the tire, the l check valves open andair supply may be had through the'flexlble duet 18. This reduc.

tion .of the pressure in the chamber 23 is responsible for operating thedevice.

The pressure drop in the chamber 23 is effective, through the duct 24,past the `restriction 25 tolower the pressure in the secondary valvechamber 27 This reduction lin the sustaining action of the diaphragm 48allows the lever 51 to depress the stem 49 and s imultaneously unseatthe valve 47. The restrictions '25, 31, and 42 may be determined forvarious diameter working out efficiently in this range f is one whereinthe restricted opening 25 may be of .02 inches in diameter, therestriction 31, .01 inches in diameter, and the restriction 42, .008inches in diameter. There is in this sequence a greater iiow volumepermitted by the restriction 25 than through either of the This meansthat the ilow of air in to the chamber 27 is .at a greater ratethan thedischarge flow therefrom. Furthermore it means that the ow intothe-chamber 32 is greater than the discharge iow therefrom even with thevalve 47 open. Y In the described instance, whenever there is a drop oflthe pressure in the chamber 23 transmitted to the chamber 27, therocking of the lever 51 in the depression of the diaphragm 48 to openthe valve 47 reduces the pressure in the chamvber 32, which chamber iscut oif from replenishment from the chamber 27 dueto the secondaryvalve. 28 closing the port 29. This.

drop in pressure'in the chamber 32 is quickly responsive to permit thepressure air I,at the inlet port 10 to unseat thev primary valve 11 andallowflowI of pressure air into the chamber 23 and by the delivery fduct 14 into the pneumatic tire 21. The out# let port 1 2 is of veryconsiderable area compared to the duct' 24, or the restriction, 25therein. Accordingly the puff of airv from the inlet port 10may have aduration inter` val into the line 14 while the Vpressure as built up inthe chamber 23 is transmitted through the duct 24 past the restriction25 for actingin the chamber 27 to lift the diaphragm 48 thereby rockingvthe lever 51to permit the check valve 47 to close and shut off leakageor bleeding. This means that there is nodirect the opening of the 'valve28 allowing the replenishment by way of duct 30 0f the pressure in thechamber 32. As this prespressure flow 1n any leakage for this shut ofi'vof leakage from the chamber'32 occurs with,

sure is built up past the restriction 31, there v pneumaticallyresponsive device shitting the.

is diii'erential diaphragm control of this valve 11 to close the port10.

If the pressure inthe tire 21 be below that for which the indicator 59is set, there may be reduction of pressure in the chamber 23 after thevalve 11 is closedthus allowing the lever 51 as acted upon by theindicator 59 to effect a re-leakage opening of the valve 47 and arepetition of this puff or intermittent.

herein disclosed is shut ofi against leakage by the lever 51 being clearof the check valve plunger 47. There is no leakage in the nor. maloperation of this equipment. However, the proportioning of theserestrictions may y be such that there is a considerable flow intervalinto the tire between oscillations of the lever 51 with the oscillationsof the lever 51.

of a definite character against any floating of A.

valve 11.` This means that as the pressure is built up to the desiredpoint, there is a sufficient differential action between the dia-`phragms 33, 34, to effect a definite and posi-` tive closingr of thevalve 1l and likewiseas there may be, reduction in pressure, thisdifferential action is effective for a quick opening. The period ofopening is one which may be controlled as indicated by thesequence forbuilding up of pressure as controlled by the restrictions in the portsor ducts. It is accordingly possible hereunder 'to have a rapid fillingof the tires with the pulsations for checking back and closing theapparatus with only minute leakage. The apparatus is thus in positionfor filling a subsequent tire. In` the bringing of a subsequent tireinto position there may be a leaving of the indicator 59 at the point57, if

' such be the pressure desired, while if the operator desires'adifferent pressure, it isonly necessary to operate the hand. wheel 67 inshifting, say to 30 pounds, if'such be thedesired pressure, under whichcircumstances the lever 51 will be lifted into position until thefitting 19 is applied to the tire valve stem. In the instance thedesired pressure be greater, say 65 pounds, and the shifting of theindicator 59 be to such point, there is then at once an oscillation ofthe lever 51 to bring up t ev pressure in the chamber 23 accordingly,even before the fitting 19 b`e applied to the tire.

In those instances wherein. an audible alarm is desired in addition to avisible signal, as the rocking lever 51, there may be conyenientlymounted on the bolts 60 in the hous.

ing 63, plate 87 for carrying gong or bell 88 as anchored-therewith byscrew 89. Clapper 90 upon flexible arm 91 may have fixed pivotalmounting 92 on this plate 87 of this alarm unit. This clapper arm 91 isshown as an angle lever having short arm 93 to be engaged by lever 94mounted on fulcrum 95 fixed with this plate 87. This leverV 94is shownof the third class with adjustable screw 96 to be struck by the counterweight 53 as the lever 51 is away from horizontal or balanced conditionand is approximately in the rest position as approaching the pin 78. Theoscillations of the lever 51, in the pulsating delivering of air, are ofa degree of quickness so that the weight 53 as striking the bolt 76mayso swing the clapperrweight 90 that such weight, as normallymaintained clear of the gong 88 by pin 97,' may have such arm- 91 flexfor a quick striking of the gong 88. There is thus evidenced an audiblesignalv for theone inflating a tire in addition to the visible signalthrough the window 65 of the housing. Accordingly, the operator whilefilling the tire need not look at the window 65 but may determine as theoscillations of the lever 51become less frequent as signaled by the gong88, that thetire has reached the desired inflation region for which theindicator 59 has been set. Because of the delay in closing the valve,due to the time interval necessary forpressure in chamber 23 to betransmitted through passage 25 to chamber 27 pressure continuous to risein chamber 23 and pipe 144 after it has reached the pressure at whichthe weight 59 is set. Air from pipe 14 is forced into the tire,therefore, by a pres! sure in the pipe 14 higher than that at whichWeight 59 is set, during this period of delay in closing the valve andthereafter until the pressure in pipe 14 and chamber 23 is lowered tothat atwhich the weightis set. This period of filling under pressure inthe pipe 14 higher than thefinal pressure in the tire i'esults in a morerapid filling operation than would filling governed by a device thatwould limit the pressure in the pipe 14 so as to prevent it from everrising above the final pressure desired in the tire.

For common subject matter this case is a continuation in part of myco-pending applications S. N. 691,419, and S. N. 27,414, filed February8,1924, and May 2, 1925, and resulting in Patents 1,632,618, and1,632,619, respectively.

What is claimed and it is desired to'secure by Letters Patent is:

through said intake port, a normally closed dischargevalve forsaiddischarge port, said.

secondary flow section'having a valve cham- .ber. provided with arestricted by-passl con- 5 nection`with the primary flow sectionchamber, a. secondary `valve in Isaidsecondary chamber, said secondarysection having a delivery duct from its chamber normally closed by saidsecondaryvalve, a pressure responsive device for the primary chambervalve to which device 'said seconda-.ry chamber delivery duct extends,said secondarysection providing an outletport from said delivery duct,and a controller for the secondary section valve 'normally closing saidoutlet port for maintaining gaseous pressure in said delivery duct whilethe primary valve is closed.

l 2. Fluid delivery apparatus embodyingja primary7 valve, a secondaryvalve, duct means including a normally closed leakage cutoff maintainingabove atmospheric pressure for the secondary valve, a duct between said.

valves, and a restricted section for retarding the secondary valveoperation.

2.5 3.' Fluid deliveryv apparatus embodying a primary valve, a secondaryvalve, duct means includlng a normally closed leakage cutoff maintalningabovey atmospheric pressure for the secondary valve, and a duct-from theseci' onda-ry valve having a restricted section for effecting controloperations of the valves.

4. Fluid delivery apparatus embodying a primary valve, a secondaryvalve, duct means including a -normally closed leakage cutoff,-

5 said cutoff having an outlet port, and acheck valve normallyclosingsaid portformaintaining above atmospheric pressure for thevalves, there being a restricted duct fromv the control to said checkvalve.

' 5. Tire inflating apparatus comprising a casing, a housing, ha valvein the housing, a' lever mounted in the` 'housing and rockablel inresponse to valve operation, adjustable means on the lever fordetermining valve action thereupon, a mounting for assembling thehousing in the casing including a bolt directly engaging between thehousing and Acasing, and an audible signal operable'by said lever andassembled by the bolt with the casing and housing. Y

6. Tire inflating apparatus comprising a casing, a housing, a valve stemin the housing, a diaphragm, a lever mounted on the hous.l

5,. ins,r and rockable upon stembperation and "flexing of saiddiaphragm, amounting for assembling the housing in the casing includ?ing a bolt directly engaging with-each thereof,

and an audible signal operable by said lever o0 and assembled by thebolt with the casing and housing.

7. Tire inflating apparatus Vcomprising a casing, a housing, each 'having an opening for a mounting bolt, a valve stem in the hous- 5 ing, adiaphragm, a levern'iounted on the mounting including a bolt throughsaid openings in the casing and housing for assembling the housing,casing and gong, andan arm operable by said lever to strike said gong.8. Tire inflation apparatus comprising a valve stem,'a diaphragm, afirst lever rockable upon stem operation and flexing of said diaphragm,agong, a clapper for the gong normally clear of the gong, a second leveroperable by the/first lever for swinging the clapper into gong contactedposition, and an adjustable -stem carried 'by one of the levers fordetermining .the clearance between the levers.

9.- Apparatus for supplying air. under pressure including a source ofair under pressure;

an expansible chamber; a valve having a port serving to establishcommuncation between said chamber andsource and .which valve isconstrained to close said port, there being a .channel through which airmay be supplied nism in controlling relation to-said valve and operableby a movable wall portion of said chamber when this wall portion ismoved by f 'the pressure of air within the chamber and serving, whenoperated, to enable closure of .said valve; a' relief valve having aport serving to establish communication between said 1 chamber andexternal air, thisvvalv'e being constrained to close this port; andmechanism also controlled by'a movable wall portion of said chamber andconstrained to operate upon reduction of the airpressure in said chamberand, in thus operating, causing the relief valve to open andsubsequently being in re# leasing relation to this valve to permit its10. Apparatus for supplying air under pressure including a source of airunderpressure;l an expansible chamber; a valve having a port serving toestablish communication between said chamber and source and which said 1valve comprising a member is constrained to close said port, there beinga channel through i". which 'air may be supplied to'a receiver and ton5- Which air is also supplied through said port;

said channel also having communication with said chamber; mechanismwincontrolling relation tofsaid valve and operable by a mov-f, able wallportion of said chamber when this?` wall portion is moved 'by-thepressure of air within the chamber and serving, when operated, toenableclosure of said valve'member; a relief valve having a vport serving toestablish communicationbetween said chamber and external air, this valvebeing constrained to close this port; and mechanism also controlled by amovable wall portionof said chamber and constrained to operate uponlinseam reduction of the air pressure in said chamber and, 1n thusoperating, causing, the relief valve to open.

v 11. The method of filling a tire to a predetermined limit of.pressurewhich consists in delivering through a passage to the tire asuc vcession of charges of v compressed air, at least a portion of eachcharge being forced into the tire by a pressure materially higher thansaid limit, and utilizing pressure of air in said passage automaticallyto stop the de'- livery of said succession of charges when the meanstiming the open interval of said valve,

pressure in-the tire reaches said limit.

12. The method of filling a tire which com Aprises conducting air to atire through a passage from a sourcev of air under pressure materiallyhigher than that desired in the tire, admitting air to said passage morerapidly than it passes into thetire so as to quickly raise the pressurein said passage, utilizing pressure of air from said passage to controlthe admission of air to said passage so as to allow said admission for alimited period after pressure rises in said passage above apredetermined limit and thereafter to again initiate admission as oftenas pressure in the passage falls below said predetermined limit. .1.3.The method of filling a tire which coinprisesi conducting air to atirethrough a passage from a source ofair under pressure materiallyhigher than that desired in thetir'e,

admitting air vto said passage morerapidly than it passes into the tireso fas to quickly raise the. pressure in said passage, utilizingpressure of air fromsaid passage to control the admission of air to saidpassage so as to stopv .admission as often as pressure in the passagerises above' a predetermined limit and to initiatel admission as oftenas pressure in the passage falls below said'limit. and in each instancedelaying the stopping of admis'- sion, for a material period afterpressure in the passage has risen above said predetermined amount,thereby flling the tire by intermittent charges and at least a portionof each charge being forced into 'the tire by pressure materially abovesaid limit.

' 14C.v Tire illingf apparatus embodying a rcheck valveto belopened uponapplication to a tire valve stem, a `soi1rce of pressure air, foreignparticle removing means. from the air, automatic valve mechanism vforsaid air rfrom the means, and af duct romthe source past-,said means andmechanism to the check valve, said mechamsm comprising a primary valve,a. valve chambertlierefor, a secondary valve, a chamber forthesecondaryjvalve'in v(Si).

v between said primary-and' secondary valves communication with theprimary valve chamber, a pressuredelivery adjustable Vcontrol forthesecondaryvalfveyantl4 a valve device',

when not -operated -tli e jcontrol, coacting for.' maintaining vpressure in said secondary ychamber when said valve isclosed-and therebynormally maintaining the primary valve closed.

` 15. In a device for charging a receiver with I compressed ai, thecombination of a source of compressed air, adjustable means for.limiting the ultimate pressure towhich said receiver is4 to be charged,'al conduit connectinglthe source of compressed air with the receiver, av alve in said conduit,means tending to close said valve, means openingsaid valve when the pressure in the conduit falls to that at which thedevice is adjusted, and .i

whereby said valve intermittently opens, dwells in open position, andcloses, this cycle continuing until pressure in .the receiver vreachesthat to which the device is adjusted.

16., The combination withv a source of air4 underA pressure of pipingthrough whichairf is conveyed from said source toa receiver; a valvebetween said source and piping; and mechanism in controlling relation tothe valve etv and constrained to eect an opening adjust ment ofl thevalve and connected with said piping and operable when the. valve isclos-` Ving to accumulate air admitted to the mechanismfrom vthe pipin.to give duration to the -open valve effect o said mechanism; saidmechanism effecting the valve upon suiiicient reduction sure of the airadmitted thereto.

17. The' combination with a source1 of "air under pressure; ofpipingthrough which air is conveyed `from said source to a receiver; avalve between said source and `piping`;' ,.and

opening ladjustment ofV ofthe pres- 100 mechanism in controllingrelation to the valve j 'and constrained to effect anopeningfa'djustment ofthe valve and connected with said pipingandoperable when the valve is closing tol accumulate air admittedthereto from the piping `to oppose the valve opening effect of los' saidmechanism,"said mechanism effecting opening adjustment lof the yvalveupon Sullicient reduction'of the'pressure ofthe air ad-` mitted theretoand having its i connectionis conveyed from said source to a'receiver; a

valve between said source and piping',- andvv mechanism incontrolling'relation tothe valve and constrainedA to eiect 'anopenijngadjust- `ment of thev valve and lconnected"l"with said pipingand operable when the-va1ve`v is closing f to accumulate aii` admittedthereto from` the piping to oppose the valve opening 'effect of' saidmechanism, vsaid mechanism .effecting opening' adjustmentof the va1ve.jupon `suicient, reduction of the pressure off'tli' air adf'f" mittedthereto and being proyided with means for giving, l uration `to the openvalve eect oithe mechanism. 'A

719* The' Combinati@ With a source of air 'under pressure; of pipingthrough which air is conveyed from said source to a receiver; a valvebetween said source and piping; and mechanism in controlling relation tothe vvalve and inclusive of a diaphragm chamber and a diaphragm,within.the chamber, constrained and related toeffect an openingadjustment of the valve, said chamber being connected with said pipingon one side of the diaphragm to render the diaphragm operable when thevalve is closing to accumulate air admitted to said chamber from thepiping toA give durationto the open valve e'ect of said mechanism, saiddiaphragm Y effecting opening adjustment of the valve upon 'sufficientreduction of the pressure of the air ad mitted to said chamber'.

20. The combination with aV source of air under pressure; of pipingthrough which air thereto from the piping', said mechanism eii'ectingopening ad]ustment of the .valve upon suiicient reduction of thepressure ofthe air admitted thereto and having its con-v is conveyedfrom said source to a receiver;

' .a valve between said source and piping; and

mechanism incontrolling relation to the valve and inclusive of adiaphragm chamber and a.

diaphragm, within the chamber, constrained and related to eiect an o.ening adjustment of the valve, said'ch'amber eing connected with saidlpiping on one side ofthe diaphragm to uber, said chamber havin itsconnection with the piping 'constricted to retard the passage of a1rtherefrom to give duration to the open Avalve effect of the mechanism.

21. The combination 'with a source of air Vunder pressure; of pipingthrough -which airis conveyed from said source to a receiver; avalvebetween said source and piping; and. mechanism in controlling relationto the valve and inclusive vof a diaphragm 'chamber and a diaphragm,within the chamber, constrained and related to elfect an openingadjustment of the valve, said chamber being connected with said pipingon one side' of the Y l diaphragm to render the diaphragm operable when.the valve is closing toaccumuiate air admitted to said chamber from thepi ing to the valve opening 'efect of sai mech- Oppose 1 an1sm,'saiddiaphragm eiecting opening ad- 'a valve justment of thevalve uponsuiiicient reduc- 'tion'bf thepressure of the air admitted to 'saidchamber, said diaphragm being effectedlby means for iving duration. tothe open valve effect oft e mechanism.`

` ,22. The combination with a source of airunder pressure of pipingthrough which air is conve ed from said source to a receiver;

getween said Ysource and piping, and mechanism in controlling relationto the valve and constrained to, effect an openin adof the valve andconnected wit said piping and reversely operable by air admitted

